Question: What is the feedstock of the pressure level that has a Mercosur code of 7109.00.00?
Paraphrase: What is the feedstock of the weight level that features a Mercosur code of 7109.00.00?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q740460 wdt:P186 ?answer . ?answer wdt:P1987 ?x FILTER(contains(?x , '7109.00.00'))}
Answer: metal